The study aims to analyze the reflexivity of religion on worship as the basic design of the multinaturalism in-universe by god as the creator with a benchmark of Hahslm approach. Religiosity connects to multiculturalism with the ontology of worship based on the Holy Book. The relation among ibadah, God, and the universe make a system in the epistemology concept. Object research is a religion that is defined as worship with the universe as a projection of ibadah. Multinaturalism is drawn by numbers and interpretation of 19. God is 1 and worship is 9. The appearance of nineteen can be found in multinaturalism such as the human body, prime numbers, plant, and animal. The study used a qualitative descriptive approach from the Holy Book, literature review, journals, books, and internet media. The hypotheses of this research are multicultural and multinaturalism have something in common, then there must be a basic design about this common pattern. And also, the pattern of humans and other creations has in common pattern then there must be a basic design for this similarity. This research uses methodologies such as triangulation of 19, reflexivity of source creator creation, and Hahslm thinking of digital numbers 472319 with 3 variables of worship God-human. Studies have shown that God has the first creation of salat, with this worship as a basic design the God creates the universe in multiculturalism and multinaturalism. Multiculturalism and multinaturalism have the same origin of the design, that is worship. This conclusion is accurately the same as the phrases in the Holy Book that God made a basic design to create the universe. And also, these phrases are consistent with the logical thinking of humans that before someone builds a thing, humanmade a design first.